The barred inner Milky Way: dynamical models from surveys
نویسندگان
چکیده
منابع مشابه
Dynamical Models of the Milky Way
The only way to map the Galaxy's gravitational potential Φ(x) and the distribution of matter that produces it is by modelling the dynamics of stars and gas. Observations of the kinematics of gas provide key information about gradients of Φ within the plane, but little information about the structure of Φ out of the plane. Traditional Galaxy models assume, for each of the Galaxy's components, ar...
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We present a new model of the three-dimensional distribution of molecular gas in the Milky Way Galaxy, based on CO line data. Our analysis is based on a gas-flow simulation of the inner Galaxy using smoothed-particle hydrodynamics (SPH) using a realistic barred gravitional potential derived from the observed COBE/DIRBE near-IR light distribution. The gas model prescribes the gas orbits much bet...
متن کامل3D self-consistent N -body barred models of the Milky Way II. Gas dynamics
The gas dynamics in the Galactic disc is modeled by releasing an initially axisymmetric SPH component in a completely self-consistent and symmetry-free 3D N -body simulation of the Milky Way in which the stellar components display a COBE-like bar. The density centre of the stellar bar wanders around the centre of mass and the resulting gas flow is asymmetric and non-stationary, reproducing the ...
متن کامل3D self-consistent N-body barred models of the Milky Way I. Stellar dynamics
Many 3DN -body barred models of the Galaxy extending beyond the Solar circle are realised by selfconsistent evolution of various bar unstable axisymmetric models. The COBE/DIRBE K-band map, corrected for extinction, is used to constrain the location of the observer in these models, assuming a constant mass-to-light ratio. The resulting view points in the best matching models suggest that the in...
متن کامل3 D self - consistent N - body barred models of the Milky Way
The gas dynamics in the Galactic disc is modeled by releasing an initially axisymmetric SPH component in a completely self-consistent and symmetry-free 3D N-body simulation of the Milky Way in which the stellar components display a COBE-like bar. The density centre of the stellar bar wanders around the centre of mass and the resulting gas flow is asym-metric and non-stationary, reproducing the ...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2017
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921317007384